Michelin SIRAC's are Very Good !
I'm surprised no one has mentioned the MICHELIN SIRAC here !
Get them from here (I did) -
Michelin Sirac Rear
I fitted a pair of SIRAC's to my 99 XT6E in April and haven't looked back. They have done a superb job in all road/offroad conditions. In wet they are stable and in the dry they perform as good as anything else on the market.
If you enjoy the adventure of discovery, check out the Michelin Sirac. While it easily handles the demands of everyday riding, it's always ready to explore dirt roads or trails. Best of all, this versatility comes at a surprisingly reasonable price.
If I hadn't gone for the SIRAC's my next choice would be the Metzeler TOURANCE. I have heard these things are now the most widely used tyre for BIG trailees...
Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).